An official website of the United States government
Here's how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
HVO geologist conducts a VLF (very low frequency) survey across the episode 61g lava tube to measure the depth and cross-sectional area of lava flowing within the tube.
Aerial view of the Kamokuna ocean entry. Lava is reaching the sea along a broad area about 1 km (0.6 miles) long. In this view, the 61g lava flow is lighter gray in color compared to older lavas.
Aerial view of the Kamokuna ocean entry and the Emergency Access Road cut by the 61g lava flow. 61g lavas are lighter in color than older lavas on the coastal plain. Upslope, a trail of fume marks the lava tube as it passes over the pali.